Dehydrating in your microwave - Using fabric or parchment paper

I've been dehydrating in my microwave for a while now. You use a microwavable plate with 2 layers of paper towel, the herbs laid out on the paper towel, and a single paper towel on top. Pop into the microwave and use short bursts of power with rest times in between, to dry your herbs. My problem is that most paper towels are made from recycled materials and there are bits of metal in the paper towel which causes arcing and burning. Bad for the microwave and the herbs. There is only one brand of paper towel available right now and it's bad. I want to try using fabric and/or parchment paper. Has anyone tried this? I don't want to reinvent the wheel if someone has done the research already.